Who are we to judge? After all, does a suspect jump up and shout "guilty!" at another suspect in court? No. That's up to the judge, and the judge punishes you for such disrespect. Leave the judging up to God, and don't shout "guilty" in His court, for we are all suspects.

And another point: We are all sinful. Can a crippled man call another crippled man slow? Can a rotten apple tell another apple it's rancid? Can an old woman call another woman of the same age "past her time?" I think not. So if we are all sinful, then how can we judge one another? And if you won't listen to me, one whom He speaks through, then perhaps you should listen to Him:

Romans
2:1 - Therefore thou art inexcusable, O man, whosoever thou art that judgest: for wherein thou judgest another, thou condemnest thyself; for thou that judgest doest the same things.2:2 - But we are sure that the judgment of God is according to truth against them which commit such things.2:3 - And thinkest thou this, O man, that judgest them which do such things, and doest the same, that thou shalt escape the judgment of God?14:4 - Who are thou that judgest another man's servant? To his own master he standeth or falleth. Yea, he shall be holden up: for God is able to make him stand.14:8 - For whether we live, we live unto the Lord; and whether we die, we die unto the Lord: whether we live therefore, or die, we are the Lord's.14:9 - For to this end, Christ both died, and rose, and revived, that He might be Lord both of the dead and living.14:10 - But why dost thou judge thy brother? Or why dost thou set at nought thy brother? For we shall all stand before the judgment seat of Christ.14:11 - For it is written, as I live, saith the Lord, every knee shall bow to me, and every tongue shall confess to God.14:12 - So then every one of us shall give account of himself to God.14:13 - Let us not therefore judge one another anymore: but judge this rather, that no man put a stumblingblock or an occasion to fall in his brother's way.